Re: pcie Realtek 8168G issues (re driver)

Luca,

I've had the same issue with this interface on both PCIe boards and embedded in a handful of Lenovo products. The one, fairly ugly workaround I've found that makes it work well enough is disable tso ( i.e. ifconfig re0 down && ifconfig re0 -tso && ifconfig re0 up ). This also seems to stop the panics under current.

I'm not sure it will work for you - but it has on everyone of those interfaces I've dealt with. 

Good luck,
-bp

> On Feb 13, 2015, at 8:06 AM, Luca Pizzamiglio <luca.pizzamiglio_at_gmail.com> wrote:
> 
> Hi, I'm Luca,
> 
> I've some issues using a PCIe Realtek Ethernet board:
> re0_at_pci0:3:0:0: class=0x020000 card=0x012310ec chip=0x816810ec rev=0x0c hdr=0x00
>    vendor     = 'Realtek Semiconductor Co., Ltd.'
>    device     = 'RTL8111/8168B PCI Express Gigabit Ethernet controller'
>    class      = network
>    subclass   = ethernet
>    bar   [10] = type I/O Port, range 32, base 0x1000, size 256, enabled
>    bar   [18] = type Memory, range 64, base 0x90500000, size 4096, enabled
>    bar   [20] = type Prefetchable Memory, range 64, base 0x90400000,
> size 16384, enabled
>    cap 01[40] = powerspec 3  supports D0 D1 D2 D3  current D0
>    cap 05[50] = MSI supports 1 message, 64 bit
>    cap 10[70] = PCI-Express 2 endpoint IRQ 1 max data 128(128) link x1(x1)
>                 speed 2.5(2.5) ASPM disabled(L0s/L1)
>    cap 11[b0] = MSI-X supports 4 messages
>                 Table in map 0x20[0x0], PBA in map 0x20[0x800]
>    cap 03[d0] = VPD
>    ecap 0001[100] = AER 1 0 fatal 0 non-fatal 0 corrected
>    ecap 0002[140] = VC 1 max VC0
>    ecap 0003[160] = Serial 1 01000000684ce000
>    ecap 0018[170] = LTR 1
> 
> Rx and Tx don't work. After some minutes the interface is activated I
> get kernel panic.
> I've already tried to disable MSIx and MSI.
> It seems a DMA problem, rx fill the 256 descriptors and the nothing
> else until the panic. netstat -s shows now new packets.
> 
> I filled a bug report with more infos:
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197535
> 
> could someone kindly pointing some ideas?
> 
> Best regards,
> Luca
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